Polarized light assessment of biological samples is a simple, fast, non-invasive and efficient technique for tissue characterization. Herein, we explore the optical polarization signatures of ex vivo muscle tissue samples of chicken, ox/beef and goat (male)/mutton, through Mueller matrix spectro-polarimetry in the spectral range of 570–800 nm. The results showed statistically significant ( p < 0.01) differences in the depolarization and retardance among the tissue samples of three animal species. These findings demonstrate a novel application of optical polarimetry, namely the characterization of muscle tissues from different animal species, which may be extended for differentiating various sources and quality assessment of meat.

中文翻译：

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利用光学偏振技术对软组织进行无标签表征

生物样品的偏振光评估是一种用于组织表征的简单，快速，无创且有效的技术。在这里，我们通过在570-800 nm光谱范围内的Mueller矩阵分光-偏振光法研究了鸡，牛/牛肉和山羊（雄性）/羊肉的离体肌肉组织样品的光偏振特征。结果显示三种动物物种的组织样本之间的去极化和延迟差异具有统计学意义（p <0.01）。这些发现证明了光学旋光仪的一种新颖应用，即表征不同动物物种的肌肉组织的特性，可扩展用于区分各种来源和肉的质量评估。